Valve-seat



R. BEAN.

I VALVE SEAT.

(No Model.)

No. 429,412. Patented June a, 1890'.

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PATENT OFFICE.

ROSOOE BEAN, OF SPRINGFIELD, OHIO.

VALVE-SEAT.

SPECIFICATION forming part of Letters Patent No. 429,412, dated June 3, 1890.

Application filed November 25 1889- Serial No. 331,408. (No model.)

To all whom it may concern.-

Be it known that I, ROSOOE BEAN, a citizen of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Valve-Seats, of which the fol lowing is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in valve-seats specially designed for use in domestic pumps, though useful in other apparatus; and it consists, essentially, of an india-rubber annulus and a stiffening, and a seat proper of a rigid or semi-rigid material, the peculiarities and advantages of which will hereinafter be more fully described, and particularly pointed out in the claims.

In the accompanying drawings, forming a part of this. specification, and in which like reference letters indicate corresponding parts, Figure 1 represents avertical sectional view of the lower end of the pump-cylinder, the cap thereof, and a portion of the lift-pipe, showing my improved valve in section and applied thereto; Fig. 2, a sectional view on the line m x of Fig. 1, showing some of the parts in plan; Fig. 3, a detail plan view of the semi-rigid filling composing the seat proper; Fig. 4, a vertical sectional View of a valve with a modified form of filling or seat proper, and Fig. 5 a detail perspective View of such latter form of filling or seat proper.

The letter A designates the lower end of a pump-cylinder of the usual or any approved type, on which is screwed a suitable cap B,- which is also of the usual type, and into thiscap is screwed the upper end of the ordinary lift or water pipe 0. The foot of the cylinder stands exposed within the cap 13 and forms a shoulder, between which and the base of the cap the valve is placed and secured.

The letter D designates an annulus of elastic material, preferably india-rubber of about the same diameter as the exposed lower end of the cylinder A, and having a central opening E to accommodate the seat proper in the form shown in Fig. 1, and to allow the passage of the water in the form shown in Fig.

4. This annulus is by preference formed with integral posts F, which extend upward somewhat above the valve and its weight and afford a yielding stop or cushion to arrest the plunger-head in case the handle of the pump is lifted so high as to endanger the valve with a blow from the plunger-head. It sometimes happens that the plunger-head is thus forced violently down upon the valve proper, which, being repeated from time to time, will sooner or later distort or break it.

It also sometimes happens that when the ried to suit the taste of the builder or the exigencies of particular circumstances. In the present instance I have also so located the posts that they project up through the slot in the valve-leather, as seen in Figs. 1 and 2. The posts ,may also be chamfered, as seen at G, to prevent anyinterferen ce with the movement of the valve-leather.

The upper portion of the india-rubber annulus around the opening is rounded or beveled off, as seen at H, so as to afford an annular chamber between the rounded or beveled part and the seat proper, in which may collect such sediment and grit as will iney itably enter into the pump and accumulate about the valve. This allows the valve to always fit smooth and fiat upon its seat.

The letter I designates one form of filling or seat proper, and the letter J another form. The form I consists of a sheet-metal annulus, constituting a filling or seat proper. It is provided in its flat portion with a number of openings, through which the rubber annulus is molded or otherwise made to pass, so as to firmly hold the filling and prevent its possible dislocation. This sheet-metal filling is constructed so as to have an annular raised bead K, the inner free edge of which may or may not rest upon the bottom of the cap B. This edge, by preference, is turned inward, so as to have a narrow flange L,which rather strengthens the device, and the bead sustains the seat against the pounding of the valve to prevent the seat from losing its shape. It will be noticed that the top of the bead is substantially on a level with the top of the india-rubber annulus. This affords the proper seating of the valve, besides forming the inner wall of the annular sediment-receptacle. I prefer to use a sheet-metal filling to constitute the seat proper, as it possesses great strength and just enough yielding quality to lessen the severity of the pounding of the valve. It is also preferred that this filling be of a non-corrosive metal, or, if desired, a non-corrosive alloy. I desire, however, to be understood as not limiting myself to a sheet-metal filling to constitute a valve-seat proper, and in this connection have illustrated at J another form of filling, which may also be of any desired material. The construction and the manner of securing itin the rubber annulus are, however, preserved. The openings in the flat part may of course be round or rectangular. In the form shown in Fig. 4 the rubber annulus is extended to the opening in the filling at the bottom, while when sheet metal is used it is preferred to terminate the rubber at the base of the outer part of the bead, as shown in Fig. 1. It will be understood that the posts F may be used or dispensed with in using either form of filling.

The letter M designates a leather valve of the usual or any approved construction,which is placed upon the valve, and, together with the outer portion of the rubber annulus, is clamped between the cylinder and the cap. The filling part, by preference, is sufficiently small to leave the solid rubber wall in that part which is clamped. The valve is weighted by a metallic block 0, held by a screw P in the usual way.

It will be observed that among other advantages my improved construction affords a rigid or semi-rigid filling and valve-seat proper, which cannot be disconnected from the yielding annulus; that a receptacle is formed for the reception of grit and sediment, the inclined wall of the receptacle causing the sediment to settle down below the top of the bead, and that the valve is protected from blows from the plunger, while a cheap and easily-applied article is produced.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A valve-seat composed of an india-rubber annulus and a filling, and a part of which filling isinclosed within the rubber and a part of which is elevated around the center to form the seat proper and to also form a sediment-receptacle between such elevated portion and the rubber.

2. A Valve-seat composed of an india-rubber annulus and a filling of sheet metal, a part of which is exposed and struck up in the form of an annular bead, and another part of which is inclosed within the body of the annulus.

3. A valve-seat composed of an india-rubber annulus and a filling of sheet metal, having the outer portion thereof fitted within the body of the annulus and provided with openings through which the rubber extends, and an inner portion struck up in the form of a bead, with the free inner edge thereof adapted to rest upon the cylinder-cap.

4. A valve-seat composed of an india-rubber annulus having yielding stops to protect the valve, and a filling, a part of which is inclosed within the rubber and a part exposed to form the valve proper.

5. In a valve-seat, the combinatiomwith a cap, of an india-rubber annulus fitted to the bottom thereof, and a sheet-metal filling, the

outer portion of which is inclosed within the rubber and the inner portion of which is struck up to form an annular head, with its free edge resting upon the cap about the opening therein.

6. In a valve-seat, the combination, with a cylinder and a cap secured thereon, of a rubber annulus and a valve clamped between the cap and the cylinder, and a filling, a part of which is within the annulus and has openings through which the rubber extends and another part of which is exposed and formed into an annular head to form the seat proper.

7. I11 a valve-seat, a seat proper of struckup sheet metal, and having a central opening and a bead formed around the same,with an inwardly-turned flange around said opening, and the convex side of the bead upward and the concave side downward.

8. In a valve-seat, a seat proper consisting of a struck-up sheet-metal annulus having the portion adjacent to the opening formed into an elevated bead upon which the valve directly seats, and having the outer skirt or portion fiat, in combination with the cylinder-cap having a flat upper surface and an elastic piece between the fiat portion of the seat and the cap.

In testimony whereof Iafiix my signature in presence of two witnesses.

ROSCOE BEAN. -Witnesses:

RANDOLPH COLEMAN, JOHN C. BASSETT, Jr.

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